Testing Time: 20 minutes The Test of Written Spelling Fifth Edition (TWS-5) is an accurate and efficient instrument that uses a dictated-word format to assess spelling skills in school-age children and adolescents. It has two forms that can be administered in 20 minutes to either individually or in groups. Each form contains 50 spelling words drawn from eight basal spelling series and graded word lists. The TWS-5 provides percentiles, standard scores, age and grade equivalents. The Answer and Record Form offers a convenient way to record and keep track of scores, summarize the results, and indicate any comments and recommendations. The TWS-5 was normed on a representative sample of 1,634 students from 23 U.S. states. The analyses show no gender or racial bias in the TWS-5 items. Test reliability was studied in various ways: coefficient alphas, alternate form (immediate administration), test-retest, alternate form (delayed administration), and interscorer. All coefficients are over .90, which indicates the test's high reliability. Additional studies confirmed the TWS-5's content-description, criterion-prediction, and construct-identification validity. Especially encouraging are the new studies of the test s sensitivity, specificity, and ROC/AUC. The results of the TWS-5 can be used for three specific purposes: to identify students whose scores are significantly below those of their peers and who might need interventions designed to improve spelling proficiency, to document overall progress in spelling as a consequence of intervention programs, and to serve as a measure for research efforts designed to investigate spelling.
Complete TWS-5 Kit Includes: Examiner s Manual, 50 TWS-5 Answer and Record Forms, and 1 Laminated Double-sided Card with Stimulus Words, all in a sturdy storage box. (©2013) User Qualifications: To administer this test at least a master' s degree is required, with state licensure OR certification from a professional organization (ASHA, AOTA, APA, AERA, ACA, AMA, NASP, NAN, INS) that requires formal training and experience in ethics, psychometrics, statistics, and scoring and interpretation. Tests of perceptual, academic, and functional processes used in schools, clinics and rehabilitation settings are of this level. All test users, regardless of level and profession, are expected to abide by the standards set forth by the APA, AERA and NCME regarding the ethical use, protection and dissemination of all test materials. All orders for the products listed below, must be placed on official institutional purchase order forms or professional letterhead.
The purchase of this product requires a check of customer qualifications. Orders for items on this page cannot be completed online. Please attach completed qualifications form to your institutional purchase order or professional letterhead when ordering this product. For questions or help placing your order for these items call (800) 880-4433. To create a requisition form:
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